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arXiv · 1310.0971

Thermoelectric properties of atomic-thin silicene and germanene nano-structures

K. Yang·S. Cahangirov·A. Cantarero·A. Rubio·R. D'Agosta
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Abstract

The thermoelectric properties in one- and two-dimensional silicon and germanium structures have been investigated using first-principle density functional techniques and linear response for the thermal and electrical transport. We have considered here the two-dimensional silicene and germanene, together with nano-ribbons of different widths. For the nano-ribbons, we have also investigated the possibility of nano-structuring these systems by mixing silicon and germanium. We found that the figure of merit at room temperature of these systems is remarkably high, up to 2.5.

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K. Yang, S. Cahangirov, A. Cantarero, A. Rubio, R. D'Agosta. 2013-10-03. Thermoelectric properties of atomic-thin silicene and germanene nano-structures. https://doi.org/10.1103/physrevb.89.125403

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